1 files changed, 1 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index 39d15de..e7cf01c 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 NAME=bp
 CC ?= gcc
 PREFIX=/usr/local
-CFLAGS=-std=c99 -D_XOPEN_SOURCE=500 -D_GNU_SOURCE -D_POSIX_C_SOURCE=200809L
+CFLAGS=-std=c99 -D_XOPEN_SOURCE=700 -D_GNU_SOURCE -D_POSIX_C_SOURCE=200809L
 CWARN=-Wall -Wpedantic -Wextra -Wno-unknown-pragmas -Wno-missing-field-initializers\
 	  -Wno-padded -Wsign-conversion -Wno-missing-noreturn -Wno-cast-qual -Wtype-limits
 G ?=